61691332 has 12 divisors (see below), whose sum is σ = 109480896. Its totient is φ = 30411080.

The previous prime is 61691299. The next prime is 61691363. The reversal of 61691332 is 23319616.

It is a junction number, because it is equal to n+sod(n) for n = 61691294 and 61691303.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108328 + ... + 108895.

It is an arithmetic number, because the mean of its divisors is an integer number (9123408).

Almost surely, 2^61691332 is an apocalyptic number.

It is an amenable number.

61691332 is a deficient number, since it is larger than the sum of its proper divisors (47789564).

61691332 is a wasteful number, since it uses less digits than its factorization.

61691332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217298 (or 217296 counting only the distinct ones).

The product of its digits is 5832, while the sum is 31.

The square root of 61691332 is about 7854.3829802219. The cubic root of 61691332 is about 395.1312537160.

The spelling of 61691332 in words is "sixty-one million, six hundred ninety-one thousand, three hundred thirty-two".